Hi!
When I unlock the phone the display backlight goes crazy, blinking, dimming, or even does not turn it on at all. The display is working all the time, just without the backlight everything almost invisible. I had tried the factory reset, disconnet and reconnect the display and battery cables, but nothing change. Any idea?
The issue: https://youtu.be/tZn2QL6X2YM
Oltcit said:
Hi!
When I unlock the phone the display backlight goes crazy, blinking, dimming, or even does not turn it on at all. The display is working all the time, just without the backlight everything almost invisible. I had tried the factory reset, disconnet and reconnect the display and battery cables, but nothing change. Any idea?
The issue: https://youtu.be/tZn2QL6X2YM
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Click to collapse
Flash Fastboot Rom.
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Hello,
the following problem appears when i try to unlock the phone after some hours: i can see my home screen, but the screen stays extremely dim. When i try to start an app (e.g. browser) the screen turns black. I can unlock it again, but the screen stays dim. after some unlocking the screen becomes normal (normal brightness) and also the apps are startable.
i am using autobrightness, the stock firmware, 4.1.1 (i9300xxdlih) power saver is not turned on.
thx, i hope you can help me solving this problem
fanbayer
Fanbayer said:
Hello,
the following problem appears when i try to unlock the phone after some hours: i can see my home screen, but the screen stays extremely dim. When i try to start an app (e.g. browser) the screen turns black. I can unlock it again, but the screen stays dim. after some unlocking the screen becomes normal (normal brightness) and also the apps are startable.
i am using autobrightness, the stock firmware, 4.1.1 (i9300xxdlih) power saver is not turned on.
thx, i hope you can help me solving this problem
fanbayer
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i updated mobile phone to android versiopn 4.1.2. this morning. Unfortunately the problem still appears.
Maybe its a hardware defect?
Try to disable somehow light sensor and change settings to non auto brightness.
Sent from my GT-I9300 using xda app-developers app
d0hn said:
Try to disable somehow light sensor and change settings to non auto brightness.
Sent from my GT-I9300 using xda app-developers app
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i disabled auto brightness and set the brightness to the highest level. But its still same: very dim and after a while a black screen; after a few times of unlocking, the display works normally
I have just seen the same issue on a friend's S3.
Anyone else? I feel like this is a very big issue that is still lurking in a lot of devices.
I tried it myself and I toggled the power button to turn the screen on and off.
It doesn't take long but sometimes when the screen turns back on, it's super dim and you can faintly see the lockscreen image.
You have to cycle the screen several more times to get it to the 'correct' brightness, and no it is NOT a brightness setting.
It's some hardware issue in the phone.
Sorry for the necrobump, but I only found this thread. I have this problem too since about a week back. It makes my phone useless at times. I first thought it was a software issue. I have an app (called Twilight) for dimming the screen more than normal settings and also toning it, for nightime use, and I thought that was the culprit first, but nope. I have flashed rom, recovery, wiped all caches I can think of. Still happens, just now I was in the middle of installing android revolution hd, and the screen ultradimmed on me so I can't finish the process
Thing is, a few months ago I managed to crack my screen by way of gravity and concrete. I let the samsung brand service centre in Stockholm repair it for me (it is out of warranty) and this issue with the dimming never happened before that. Then again, it didn't happen directly afterwards either... but still. So, I am thinking: either me dropping it caused more damages and this is because of that. Or the service center did a bad install of the new screen. Or, the replacement screen that was installed has a defect in itself. I am leaning a bit towards the third explanation... maybe different batches of screens?
Does anyone have any ideas? If I am to contact the service center and complain about their work I would like to be able to point towards a "known problem"...
8Fishes said:
I have just seen the same issue on a friend's S3.
Anyone else? I feel like this is a very big issue that is still lurking in a lot of devices.
I tried it myself and I toggled the power button to turn the screen on and off.
It doesn't take long but sometimes when the screen turns back on, it's super dim and you can faintly see the lockscreen image.
You have to cycle the screen several more times to get it to the 'correct' brightness, and no it is NOT a brightness setting.
It's some hardware issue in the phone.
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Click to collapse
Take it back, if it didn't happen before then the new screen is most likely.
It isn't a common problem
Hey, i have a weird problem, occurred while i was charging and using my device
then thescreen started to flicker thephone shuted down and i heard a sound of zzzzzzz after that a message
said hardware reset, unblugged the battery then every thing works fine but..
whenever i use screencast the video is blueish - Blue- cm10.1 stable
whenever i turn off the device and charge it, after the signal of empty battery the screen flashes
after that the charging indicator, when the screen goes off and i touch it 'the screen' the led buttons get lighted up!!
so what should i do?! and what is hardware reset means?
While I was charging my phone, I noticed the LED notification was not on. I checked the settings and it's still enabled. The LED didn't react even when I received notifications. I thought perhaps the LED died somehow, so I restarted my phone to see if it would turn on at all.
The LED lit up in a blue color during the entire restart process. However, it remains unresponsive for everything else.
Anyone else experienced this? I'm guessing it is a software issue.
azngtr said:
While I was charging my phone, I noticed the LED notification was not on. I checked the settings and it's still enabled. The LED didn't react even when I received notifications. I thought perhaps the LED died somehow, so I restarted my phone to see if it would turn on at all.
The LED lit up in a blue color during the entire restart process. However, it remains unresponsive for everything else.
Anyone else experienced this? I'm guessing it is a software issue.
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had same issue then i went in to recovery and wipe cache and rebooted it was working so not sure if itll work but it cant hurt
Hi,
I have the following problem: The screen of the phone is sometimes very dark after unlocking, so dark that I can see almost nothing. I then have to lock the phone again and unlock it again, and after a few attempts it is then as bright as it should be. The automatic brightness control is switched off.
The problem occurred a few weeks ago, in the beginning only when the phone was charged, but now also in normal operation.
I am using the AOSPExtended ROM, could this be a ROM problem or is this more of a hardware problem?
Thanks, jennix
I have a Xiaomi Redmi Note 9S which has the following behaviour: it works normally until the moment it goes under the sun, then (apparently only) the backlight of the screen is turned off and never turns on again until I restart the smartphone, where it works normally until the very moment it "detects" a bright light like under the sun, then the screen goes black. When this happens, sometimes you can still see the shape of what was on screen, but most times it only goes totally black.
When the screen is black, the telephone keeps working normally (music keeps being played, receives calls, vibration responses keep working, etc...(confirmed it using scrcpy and all is working normally)), only that the backlight is turned off and it keeps totally black. During the night, i.e. with artificial light, the telephone works normally (I was able to replicate the error using a strong flashlight above the telephone, the screen also went black the very moment I turned it on).
What I tried to resolve: restarted many times, disabled every auto brightness (also one that I think is a Xiaomi MIUI only, sunlight detector, something like this) settings that are in the configuration menu, restarted using vol up + power button. Factory reseted the smartphone. Disabled pocket mode before and after factory reset.
Any idea how to proceed? What is killing me is that it seem to be a software issue, like, why the screen don't turn on back after a while, but every time you restart it, or why the phone works all night long (i.e. there no strong light on it)?
How to capture the telephone log (logcat perhaps?) and be sure of what is the exact event that is disabling screen? Maybe I can manipulate it to prevent from happening, or to make screen goes back to normal after a while, as I work as a software developer.